8.2.3—Urban area as system
- Syllabus
- First assessment 2026
- Objective
- 8.2.3
- Level
- SL
Follow One Resource Through the City
An urban area is an open system: resources enter, buildings and services transform them, and products, waste and pollution leave or feed back into management.
Draw inputs, processes, outputs and feedback rather than a disconnected list. Water, energy, materials, transport, people, plants and animals are linked stores and flows.
A city imports water, treats and distributes it, then outputs wastewater; greywater reuse changes the next water input.
As feedback that changes an output into a later input, not as a detached label.
Naming departments without arrows is not a systems-flow model.